Kingdom Animalia Class Pteraspida Suborder Cyathaspidida Rank Genus | Phylum Chordata Order Cyathaspidiformes Family Ctenaspidae | |
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Similar Poraspis, Anglaspis, Lepidaspis, Cardipeltis, Amphiaspis | ||
Ctenaspis is an extinct genus of heterostracan cyathaspid agnathans from the early Devonian of Canada.
species
References
Ctenaspis Wikipedia(Text) CC BY-SA